Aximinster loom



2 Shee'ts-Sheet l w w. ROBERTSON AXMINSTE'R LOOM Film1 Nov. 29, 1935 f z I I 1 l I I l I l I I L Dec. 29, 1936.

Dec. 29, 1936.

W. W. ROBERTSON AXMINSTER LOOM Filed NOV. 29, 1935 2 Sheets-Sheet 2 Patented Dec. 29, 1936 UNITED STATES PATENT OFF-ICE AXMINSTER LOOM Application November 29, 1935, Serial No. 52,150

6 Claims.

This invention relates to Axminster looms in which ends of color yarns are inserted by tube frames between binder warps and are thereafter swung upward around inserted filling shots to form U-shaped tufts in the fabric.

More specifically, my invention relates to the mechanism for combing or positioning the tuft yarns and for bending the yarn ends upward between the binder Warps.

It is the general object of my invention to provide improved devices for straightening and positioning the yarn ends during the tuft-forming movement of the comb.

An important feature of my invention relates to the provision of an improved comb plate and to the provision of improved controlling devices therefor, so designed that pressure of the comb plate on the binder warps and binding of the tuft yarns against said warps will be eliminated.

My invention further relates to arrangements and combinations of parts which will be hereinafter described and more particularly pointed out in the appended claims.

A preferred form of the invention is shown in the drawings, in which Fig. 1 is a side elevation .of parts of an Axminster loom embodying my improvements;

Fig. 2 is an enlarged side elevation of certain parts shown in Fig. l;

Fig. 3 is a detail front elevation, looking in the direction of the arrow 3 in Fig. 2, and

Figs. 4, and 6 are diagrammatic side elevations illustrating the operation of my invention.

Referring to the drawings, I have shown portions of an Axminster loom including a loom frame I0 supporting a cloth board l I and provided with the usual lay I2 and reed I3 for beating in the filling shots F.

Yarn tubes I4 (Figs. 2 and 3) are mounted on the usual tube frames and are manipulated by the usual actuating mechanism so that successive sets of yarn tubes are positioned as indicated in Figs. 2 and 3.

The tuft yarns Y are inserted between the binder warp threads B by downward movement of the yarn tubes I4 which are thereafter drawn upward to the position indicated in Figs. 2 and 3. A knife or knives I5 operate in the usual manner to sever the tuft yarns after the loops are formed as indicated in Fig. 6. The parts thus far described are of the usual type.

A comb 2i! extends across the loom and is preferably in the form of a heavy sheet metal plate having a series of slots 2I (Fig. 3) to receive the binder warps B. The comb is mounted on arms 22 pivoted on a cross rod 24 which in turn is supported on arms 25 mounted on a cross shaft 26. The cross shaft 26 is supported in bearings 23 (Fig. 1) fixed to the loom frame I0.

One or more lugs 21 (Fig. 2) project downward from the arms 22 and are provided with studs 28 forming pivots for the upper ends of links 29. The links 29 are pivoted at their lower ends on studs 3B (Fig. 1) mounted in the ends of arms 3| secured to a rock shaft 32. The shaft 32 is connected 'by an arm 33 and link 34 to usual actuating mechanism not shown.

When the link 34 is moved to the right or in the direction of the arrow a in Fig. 1, the links 29 will be raised and the comb 20 will be correspondingly moved upward. The link 34 is usually actuated by a cam by which the motion of the comb may be controlled and timed as desired but any suitable actuating means may be used.

It should be noted that the described motion of the comb is a motion substantially perpen dicular to the plane of the binder warps and is about the axis of the cross rod 24, which remains temporarily fixed during the preliminary upward movement of the comb.

A comb plate 40 is positioned alongside and closely adjacent the comb 20 and preferably comprises a piece of sheet metal extending across the loom and supported on arms 42 loosely pivoted on the cross rod 24. The arms 42 have projecting members 44 connected by coil springs 45 to' fixed supports 46. Springs 45 yieldingly maintain stops 41 on the arms 42 in engagement with the under sides of the arms 22, thus holding the comb and plate in definite associated positions.

The upper edge of the comb plate 4I) is preferably provided with shallow grooves 48 which act to center and position the tuft yarns Y between the binder warps B and between the slots 2I in the comb 20.

The arms 42 are provided with lugs 50 having pivot studs 5I for the upper ends of control rods 52. The rods 52 (Figi) are preferably each formed in two parts connected by a turnbuckle 53 and the lower end of each rod 52 is provided with a stud 54 vertically slidable in an elongated slot 55 in a fixed bracket 56.

As the comb 20 is moved upward by the link 34, the springs 45 cause the comb plate 40 to follow such upward movement of the comb 20 until the studs 54 in the lower ends of the control rods 52 engage the upper ends of the fixed slots 55, thereby limiting the upward movement of the comb plate 40.

The turn buckle 53 is so adjusted that the comb plate' will just clear the binder warps B When in its highest position and will not press against the warps or bind the tuft yarnsagainst the warps as in the previous practice.

The cross shaft 26 is connected by arms 60 (Fig. l) and links G2 to a cam or other actuating mechanism by which the shaft 26 will be rocked at suitable intervals to swing the cross rod 24 rearward or to the right in Figs. 1 and 2, thereby causing the comb plate 40 to bend the tuft yarns Y rearward about a lling shot F as shown in Fig. 4.

During such rearward movement the studs 5I move in an arc about the studs 54 in the lower ends of the control rods 52, and this arcuate movement, combined with the corresponding arcuate movement of the cross rod 24 about the axis of the cross shaft 26, causes the upper edge of the comb plate 40 to follow a path substantially coinciding with the lower surface of the binder warps B but spaced slightly below said warps. There is consequently no pressing of the tuft yarns against the warps and the tuft yarns are combed directly rearward and are accurately spaced between the binder warps.

The link 34 (Fig. l) is thenrfurther actuated to swing the comb 20 upward to the position shown in Fig. 5, thus forming the U-shaped loops in the ends of the tuft yarns Y, after which the knife or knives l5 advance and sever the tuft yarns before the yarn tubes I4 are lifted and moved along.

The comb 20 and comb plate 40 are thereafter returned to the position shown in Fig. 2 and the cycle of operations is repeated after another set of tuft yarns Y have been inserted between the binder warps.

The essential novelty of my invention resides in the provision of means for controlling the movement of the comb plate 40 in part independently of the comb 20, so that the comb plate will be positionedslightly below the lower shed of the binder warps at all times during the rearward combing action of the plate.

Having thus described my invention and the advantages thereof, I do not wish to be limited to the details herein disclosed, otherwise than as set forth in the claims, but what I claim istl. In an Axminster loom, a comb, a comb plate, means to give said comb a movement toward the warp, means to give said comb plate yielding movement with the comb toward the warp, and means operative as the comb and plate move rearward and effective to limit the upward yielding wovement of the comb plalte while the upward movement of the comb continues.

2. In an Axminster loom, a comb, a comb plate, means to move said comb and plate together, and means independent of the binder warps and operative as the comb and plate move rearward, said means being effective to positively limit the upward movement of the comb plate with said comb during said rearward movement.

3. In an Axminster loom, a comb, a comb plate, means to move said comb and plate together, and means independent of the binder warps and operative as the comb and plate move rearward, said means being effective to positively limit the upward movement of the comb plate with said comb during said rearward movement and to cause the working edge of said comb plate to follow a rearward path adjacent but slightly spaced from the lower shed of the binder warps.

4. In an Axminster loom, a comb, a comb plate, means to move said comb and plate together in a rearward direction, and means thereafter to move said comb and comb plate along diverging rearward paths, with the comb plate at all times held out of contact with the lower surface of the binder warps.

5. In an Axminster loom, a comb, a comb plate, springs to press said comb plate against said comb, means to move said comb upward and rearward, and control rods having lost motion connections to fixed parts of the loom and effective to limit yielding upward movement of said comb plate during the latter part of said rearward movement.

6. In an Axminster loom, a comb, a comb plate, springs to press said comb plate against said comb, means to move said comb upward, means to move said comb rearward, and means to guide the working edge `of said comb plate in a rearwardly and downwardly extending arc as said comb and comb plate move rearward.

WILLIAM W. ROBERTSON. 

